joi - 指定字段名称而不是 "value"

Question

我必须逐个验证值，而不是为多个值传入整个架构。基于此处的单值验证文档

https://hapi.dev/module/joi/

和这个示例代码

const validator: AnySchema = Joi.string().valid('foo', 'bar').required();
const validationResult: ValidationResult = validator.validate('invalid');
const validationError: ValidationError = validationResult.error;

if (validationError) {
    throw validationError;
}

该代码将抛出错误并显示以下错误消息

ValidationError: "value" must be one of [foo, bar]

有没有简单的方法可以替换 "value"有具体的名字吗？所以当我想验证 环境错误信息可能是

ValidationError: "environment" must be one of [development, production, test]

还是只有在一次验证多个值时才有可能？

Answer 1

有 any.label(name) 您可以使用并设置自定义标签的方法，该标签也将显示在错误消息中:

any.label(name)

Overrides the key name in error messages.

• name - the name of the key.

const schema = {
    first_name: Joi.string().label('First Name')
};

你可以简单地做:

const validator: AnySchema = Joi
  .string()
  .label('Foo/Bar') // Change tha label using label method
  .valid('foo', 'bar')
  .required();

const validationResult: ValidationResult = validator.validate('invalid');
const validationError: ValidationError = validationResult.error;

if (validationError) {
    throw validationError;
}

将输出:

ValidationError: "Foo/Bar" must be one of [foo, bar]